The third edition of Contemporary Security Studies provides a comprehensive and accessible introduction to the rapidly developing field of security studies. Bringing together leading scholars in the field, it covers a broad range of approaches and issues, from terrorism and inter-state armed conflict to security issues centring on the environment, health, and transnational crime. The new edition includes a new chapter on cyber-security, as well as introducing more material on international organizations and institutions, private military companies, and nuclear proliferation and deterrence. This text is accompanied by an Online Resource Centre which includes: Student resources - case studies, web links, multiple choice questions, flashcard glossary Lecturer resources - PowerPoint slides